Line-of-sight effects on spectroscopic measurements in the inner solar wind region

Details Line-of-sight effects on spectroscopic measurements in the inner solar wind region Line-of-sight effects on spectroscopic measurements in the inner solar wind region

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.6886e&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, June 1, 1989, p. 6886-6892. Research supported by the Smithsonian Ins

Physics

7

Line Of Sight, Solar Wind, Spectral Line Width, Ultraviolet Spectroscopy, Coronal Holes, Line Shape, Lyman Alpha Radiation, Wave Scattering

Scientific paper

The effect of the integration along the line of sight on the spectral line profiles of the resonantly scattered Lyman alpha radiation emitted by low-density coronal holes at heights above 1.5 Rs from sun center is investigated. It is shown how the spectral lines from this region are influenced by the Lyman alpha emission from surrounding regions with higher densities. The coronal hole and the surrounding areas are described by a two-fluid solar wind model. It is shown that the line-of-sight effects can be important for the interpretation of the Lyman alpha spectral line measurements in the outer corona and inner solar wind.

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